package me.himi.love.im.util;

import me.himi.love.MyApplication;
import android.content.Context;
import android.content.res.Resources;

/** 像素转换工具
 * @author MarkMjw
 */
public class PixelUtil {

    /**
     * The context.
     */
    private static Context mContext = MyApplication.getInstance();

    /**
     * dp转 px.
     *
     * @param value the value
     * @return the int
     */
    public static int dp2px(float value) {
	final float scale = mContext.getResources().getDisplayMetrics().densityDpi;
	return (int) (value * (scale / 160) + 0.5f);
    }

    /**
     * dp转 px.
     *
     * @param value   the value
     * @param context the context
     * @return the int
     */
    public static int dp2px(float value, Context context) {
	final float scale = context.getResources().getDisplayMetrics().densityDpi;
	return (int) (value * (scale / 160) + 0.5f);
    }

    /**
     * px转dp.
     *
     * @param value the value
     * @return the int
     */
    public static int px2dp(float value) {
	final float scale = mContext.getResources().getDisplayMetrics().densityDpi;
	return (int) ((value * 160) / scale + 0.5f);
    }

    /**
     * px转dp.
     *
     * @param value   the value
     * @param context the context
     * @return the int
     */
    public static int px2dp(float value, Context context) {
	final float scale = context.getResources().getDisplayMetrics().densityDpi;
	return (int) ((value * 160) / scale + 0.5f);
    }

    /**
     * sp转px.
     *
     * @param value the value
     * @return the int
     */
    public static int sp2px(float value) {
	Resources r;
	if (mContext == null) {
	    r = Resources.getSystem();
	} else {
	    r = mContext.getResources();
	}
	float spvalue = value * r.getDisplayMetrics().scaledDensity;
	return (int) (spvalue + 0.5f);
    }

    /**
     * sp转px.
     *
     * @param value   the value
     * @param context the context
     * @return the int
     */
    public static int sp2px(float value, Context context) {
	Resources r;
	if (context == null) {
	    r = Resources.getSystem();
	} else {
	    r = context.getResources();
	}
	float spvalue = value * r.getDisplayMetrics().scaledDensity;
	return (int) (spvalue + 0.5f);
    }

    /**
     * px转sp.
     *
     * @param value the value
     * @return the int
     */
    public static int px2sp(float value) {
	final float scale = mContext.getResources().getDisplayMetrics().scaledDensity;
	return (int) (value / scale + 0.5f);
    }

    /**
     * px转sp.
     *
     * @param value   the value
     * @param context the context
     * @return the int
     */
    public static int px2sp(float value, Context context) {
	final float scale = context.getResources().getDisplayMetrics().scaledDensity;
	return (int) (value / scale + 0.5f);
    }

}
